How do I remove current filament for new kind?

I have the A1 Mini and I want to switch from the PLA basic white I am currently using to the red color filament. I do not have AMS, so I am doing it manually. The filament seems to be really stuck in there and I don’t want to pull too hard or mess it up. Can you tell me how to get it out of the nozzle and out of the tube so I can switch?

This video is for an A1 but it is very similar if you follow the steps.

Thank you very much! I appreciate the help